Question

Jose left the White House and drove toward the recycling plant at an average speed of 40 km/h. Rob left some time later driving in the same direction at an average speed of 48 km/h. After driving for five hours Rob caught up with Jose. How long did Jose drive before Rob caught up?

Answer 1

Let
`x` represent Jose's drived distance and
`y` represent Rob's.
So what you need to do is to solve the equation:

`40x=48*5`

`40x=240`

`x=240/40=6`

So Jose drove for 6 hours before Rob caught him.